Core-making machine



R; C. PATTISON.

CORE MAKING MACHINE. APPLICATION FILED JULY 12,1920.

Patented Dec. 28, 1920.

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R. C. PATT|SON.. CORE MAKING MACHINE. APPLICATION FILED JULY I2. 1920.

Patented Dec. 28, 1920.

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R. C. PATTISON.

CORE MAKINGv MACHINE- APPLICATION FILED JULY 12.1920.

Patented Dec. '28, 1920.

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w p 5:55.; ii Y 1 g 4 attozwmg R. C. PATTISON.

CORE MAKING MACHINE. I APPLICATION FILED JULY I2. 1920.

1,363,591 Patented Dec. 28,1920.

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A TTOR/VEY R. c. PATTISON.

CORE MAKING MACHINE.

APPLICATION FILED JULY 12,1920.

1,363,91 1 Patented Dec. 28, 1920.

5 SHEETSSHEET 5- UNITED EiliV fiihESi ROSCOE C. PATTISON CORE-MAKING D/IACEIIIE.

Application filed July 12, 1920.

T 0 all whom it may concern:

Be it known that l, Roscon C. Parrrson, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Core-Making Mm chines, of which the following is a specification.

This invention relates to core making machines, and has for its object a machine which can be attached to a bench and which is capable of not only inverting the core box but also turning the same through one quarter of a turn so as to bring the core and the box from a position on the bench to a position in front of the bench, where it is easily accessible to the operator.

Another feature of the invention is a special arrangement of devices for lifting the core box from the core and a special form of lock for holding the core box in lifted position.

Another feature is the means for holding the clamping lever in a variety of positions, as for instance, locking it down over tie plate that is thrown over the core box and locking it in its turned-back position.

Another important feature is the registering devices which cause the core box cradle to register in proper position on-the landing support when the cradle is transfer "ed from the jolting blocks to the landing supports. These and other features will be best understood when a full description has been had.

In the drawings,

Figure l is a plan view of the machine which can be attached to a bench.

Fig. 2 is a front elevation of the same.

Fig. 3 is a perspective of the machine when the cradle and clamping lever have been turned to land the core upon the landing supports.

Fig. 4 is a similar perspective showing the arrangement of the parts when the cradle has been raised to lift the core box from the core.

Fig. 5 is a section on the line 5-5 of Fig. 2.

Fig. 6 is a sectional detail on the line 6-6 of Fig. 3.

Fig. 7 is a sectional detail of the clamping lever support.

F i 8 is a sectional detail of a lock for the cradle-lifting lever.

Fig. 9 is a perspective of the portion of the cradle-lifting lever.

Specification of Letters Eatent.

Patented Dec. 28, 1926.

Serial 110. 895,676.

a designates a molding bench to which the base Z) of my machine may besecured by screws 0. Integral parts of the same casting form the jolting blocks 6. From the front of this casting protrude brackets 7 which support the threaded stems g of the adjustable landing supports h. I have previously claimed this landing support construction and hence make no claim to this feature in this application. However, I do claim the position of the landing support with respect to the jolting blocks and the support for the core box cradle and clamping lever which permits both the inversion of the core and swinging it through quarter of a turn to locate the core upon the landing support. This is permissible by reason of utilizing a ball and socket joint 2' for supporting the core box cradle j. The threaded stem is is adjustably secured in the head of this cralle. This carries a smaller head Z which forms the support for the clamping'lever m. This lever is recessed to form a plunger socket to receive the plunger 9?. which has a foot portion that rides over the latch faces of the lever support. It will be apparent that there are three of these faces (Fig. 7) shown in the drawings although it would be permissible to use only two. It will be seen that the plunger it keeps the lever in ts thrown-back position by engaging the ear latch surface as is shown in Fig. 7. In he position shown in Fig. 3 the lever is kept n the clamping position although the enagement of the latch with the latch surface is not here shown. In the position shown in Fig. 4, the lever is kept in its intermediate position, where its non-interference with the core or other parts of the machine in lifting the core box grid is assured.

The ball of the ball and socket joint is carried on a stem 0 supported upon the slide p. A pair of rods 9 and q slide through openings in the base of the machine, one formed by the boss 8 and the other by a pair of boss segments 1" (see Fig. 1). These boss segments 1" are adjustable to compensate for wear by the use of the cap screws and slots 6. Now referring to Fig. 2, it will be seen that at,the bottom of these rods 9 and is a connecting bar or bracket M which is connected by a link 4) with the end of the lever to (a lever of the first order). This lever is pivoted at a; in the base I) of the machine.

Referring to Figs. 8 and 9, a special form of latch for retaining this lever in its uppermost position is shown. This comprises a bell-crank lever :2 having a hooked end or bill a. This lever is adapted to be pressed out by the coil spring 1. As the lever to is raised this bill a rides on the inclined surface 2 of the fork of the lever until finally the lever has been raised high enough so that the bill a drops in under this surface and into the locking recess 3. The spring then holds the hook in this recess and thereby holds the cradle-lifting lever in its raised position and the core box in its raised position. Before the lever can be depressed it will be necessary to displace the latch lever y.

Referring to Fig. 2, the registering de vices on the slide 79 and on the cradle head will be seen. at designates a beveled projection on the cradle head. 5 is the complementary socket on the slide p. This socket is formed by the upright 6 on the slide in connection with the vertical traveling beveled head Note that this is provided with a dowel pin 8 that slides through a hole in the slide 39 to guide the head. This head is provided with a pair of projecting arms 9 adapted to engage the sides of the upright 6 and be also guided thereby when it is adjusted vertically by loosening the nut 10 and turning the cap screw 11. 12 is a recess at the bottom of the registering socket for allowing any sand that may be spilled in the socket to run down off the surface of the socket.

A vibrator 13 is connected with the slide 10 for vibrating the slide and its attached cradle for the purpose of loosening the core box from the core at the appointed time. This vibrator is old construction and need not be described in detail.

The mode of operation is as follows: The core box is placed upon the cradle 7', being bolted thereto through the bolt holes let (Fig. 1). The box is then filled with the molding sand and other materials suitable to build the core. The cradle 7' may be jolted up and down on the j olting blocks 6 to cause the sand to properly settle in the core box. Thereupon a plate may be inserted over the core box core and the clamping lever on is then broug t down over this plate and is held in this down position by reason of the latch a engaging against the right latch face of the lever support Z. The hand portion of the clamping lever and the handle 15 of the cradle may then be. grasped and the core box and core together with the cradle and lever swung around horizontally through a quarter of a turn and be completely inverted by turning on the ball and socket joint 2'. This brings the core box and core directly in front of the operator upon the landing support it. The operator then presses on the switch button 16. This starts the vibrator 13. This vibrator continues until the switch button is pulled out. After a suitable length of vibration to loosen the core box from the core, the operator presses down on the lever to which will cause the rods 9 and Q to raise and lift the slide 7 at the same time lifting the cradle with the core box, leaving the core standing on the core plate resting upon the landing. support. The clamping lever m rises with the slide and cradle but it in no way interferes with the core and core plate for it has previously been swung back to neutral position, wherein it is securely held by the latch n engaging the intermediate latch surface of the lever support Z.

It will readily be understood that the position of the clamping lever with respect to the cradle j may be altered to suit varying core boxes by loosening the nuts 17 and adjusting the stem is vertically. The registering devices are subject to the slight adjustment as already stated, in connection with the head 7 by loosening the nut 10 and turning the cap screw 11 to cause this head 7 to travel vertically.

From the above description it will be evident that this core making machine is a departure from the usual run of core making machines which require separate stands or standards and which swing the cradle only in a single vertical plane on a single pivot for the purpose of inverting the core. I not only provide a machine which can be bolted to a bench but also accomplish the inversion of the core by a universal joint support for the cradle and clamping lever that permits both inversion and the swin ing of the core around through a quarter of a turn. This makes a machine which has several advantages over the customary machine, namely, compactness, convenience, and several other features. The core-lifting lever is provided with what is believed to be a new and useful lock to hold it in its lifted position. The clamping lever is provided with a suitable latching arrangement which permits it to be held in a variety of positions. The core box cradle is provided with a suitable registering element in connection with the slide to insure the cradle always being properly landed on the landing supports.

What I claim is:

1. In a core making machine, the combination of jolting blocks and a landing support whose general arrangement is substan tially 90 degrees removed from each other, and a core box cradle supported so that it can be transferred from the jolting blocks to the landing support through a quarter of a turn.

2. In a core making machine, the combination of jolting blocks and a landing support whose general arrangement is substantially 90 degrees removed from each other, and a core box cradle and clamping lever that can be swung in unison from the jolting blocks to the landing support through substantially a quarter of a turn in a horizontal plane.

3. In a core making machine, the combination of j olting blocks and a landing support whose general arrangement is substantially 90 degrees removed from each other, and a core box cradle which is capable both of inversion and swinging on a horizontal plane through substantially a quarter of a turn from the jolting blocks to the landing support.

4. In a core making machine, the combination of a set of jolting blocks, a set of landing supports, the two sets being substantially 90 degrees removed from each other, and a core box cradle supported upon a universal joint and which can be moved from the jolting blocks to the landing supports and also inverted.

5. In a core making machine, the combination of a set of jolting blocks and a set of landing supports whose general arrangement is 90 degrees removed from each other, and a core-box cradle with a ball and socket support which permits the cradle to be moved from the jolting blocks to the landing supports through a quarter of a turn and also inverted.

6. In a core making machine, the combination of a set of jolting blocks, a set of landing supports, a member having a registering socket support adjacent to the landing supports, and a core-box cradle swingingly supported and provided with a registering device thereon adapted to engage with the registering socket to properly fix the core-box cradle with respect to the landing supports.

7. In a core making machine, the combination of a set of jolting blocks, a set of landing supports, a member having a registering socket therein provided with an adjustable portion and supported adjacent to the landing supports, and a core-box cradle movably supported and provided with a registering device adapted to engage with the registering socket to accurately locate the cradle with respect to the landing supports.

8. In a core making machine, the combination of a set of jolting blocks, a set of landing supports, a member provided with an upright portion supported adjacent the landing supports, and an adjustable head slidable vertically with respect to said upright portion to form a variable registering socket, and a corebox cradle movably supported and provided with a registering device adapted to engage with said registering socket to locate the cradle accurately with respect to the landing supports.

9. In a core making machine, the combination of a set of jolting blocks, a set of landing supports, a member supported adjacent the landing supports provided with an upright, a head having a pair of projecting arms adapted to engage the sides of the upright and guided vertically in connection therewith, the said head having a beveled face which in connection with the upright forms a V-like registering socket, and a cradle movably supported with respect to the blocks and supports and provided with a beveled projection adapted to engage with the registering socket to accurately 1ocate the cradle with respect to the landing supports.

10. In a core making machine, the combination of a core-box cradle, a clamping lever support thereon provided with one or more latch faces, and a clamping lever provided with a latch adapted to engage said latch face or faces.

11. In a core making machine, the combination of a core-box cradle, a clamping lever support provided with a plurality of latch faces, a clamping lever pivoted thereto and provided with a latch adapted to engage said latch faces to tend to keep the lever in the position in which it is left.

12. In a core making machine, the combination of a core-box cradle, a head rising therefrom provided with a plurality of latch faces thereon, a clamping lever pivoted thereto provided with a plunger-like latch in the clamping lever adapted to yieldingly engage the latch faces to maintain the clamping lever in a given position.

13. In a core making machine, the combination of a core-box cradle, a stem adjustably rising therethrough and provided with a head thereon having a plurality of latch surfaces, and a clamping lever pivotally supported by the head and provided with a latch recess provided with a plungerlike latch engaging therein and against the latch surfaces of the said head to tend to maintain the clamping lever in a given position.

14%. In a core making machine, the combination of a vertically traveling slide, a coreboX cradle movably supported on said slide, a lifting lever pivotally supported and adapted to raise or lower said slide, and an automatic latch member for holding the said lever and maintaining the slide in its upright position when engaged.

15. In a core making machine, the combination of a vertically traveling slide, a core-box cradle swingingly supported thereon, a lever of the first order for raising said slide, connections between the end of the lever and the slide, and an automatic latch for retaining the lever and holding the slide in its upright position, comprising a springpressed bell-crank lever normally thrown aside as the lifting lever is raised but adapted to lock in under the lifting lever when the lifting lever reaches its upright position.

16. In a core making machine, the combination of a vertically traveling slide, a core-box cradle swingingly supported thereon, a lever provided with a recess for lifting the slide, connections between said lever and the slide, and an automatic latch in the form of a spring-pressed bell-crank lever adapted to be pressed out of the way as the lifting lever end rises but provided with a hook adapted to drop into a recess under the lifting lever end when the latter reaches its uppermost position.

17. In a core making machine, the combination of a vertically traveling slide, a core-box cradle swingingly supported upon said slide, a clamping lever pivotally supported upon the cradle and provided With a latch for keeping the clamping lever in perpendicular position with respect to the cradle when the core box is lifted from the core, and means for lifting the core-box cradle by causing said slide to travel vertically.

18. In a core making machine, the combination of a set of jolting blocks, and a set of landing supports angularly removed from each other in a horizontal plane considerably less than 180 degrees,a core box cradle, and a support therefor permitting the cradle to swing both in a vertical plane for inversion and in a horizontal plane for reaching the landing supports.

In testimony whereof I aflix my signature.

ROSCOE G. PATTISON. 

